Air-pump



`(111011151.) i 1 I A H.PHUMPHREVILLE.

11111 PUMP, No. 244,901. Patented July 2611881.

N. PETERS. Plmm-Lixhugmpmr, washmmon, D. c,

UNITED STATES PATENT OFFICE.

HENRY HUMPHEEVILLE, or MoUNTvILLE, PENNSYLVANIA.

AIR-PUMP.

SPECIFICATION forming part of Letters-Patent No. 244,901, dated July 26, 1881,

Application tiled May 12, 1881.

certain new and useful 'Improvements in Air- Pumps for Atomizers; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the aclcompanying drawings, and to the letters of reference marked thereon, making a part of this specification.

This invention relates to certain improvements inair-pumps, and it is specially de signed to be employed in connection with the spray-darnpener for which Letters Patent of the United States were granted to me the 2d day of March, 1880.

The invention has'for its objects to provide a means whereby a current of air may be forced through such a machine, as is more fully hereinafter specified. These objects I attain by the apparatus and devices illustrated in the accompanying drawings, in which- Figure l represents a longitudinal section of my improved device; Fig. 2, a view ot' the device, showing the spray-dampener attached thereto. Y

The letter A indicates a cylinder constructed of metal or other suitable material, and provided with a nozzle, B, having a rubber packing, C, over which may be fittedthe tube leading to the spray-dalnpener, as indicated in Fig. 2 ot' the drawings.

. Ihe letter D indicates a diaphragm at the forwardpart of the cylinder, which has a central aperture, E, provided with an outwardlyopening valve, F.

The letter G indicates an aperture in the (Model.)

forward end of the cylinder, and H. an inwardly-opening valve at said aperture.

I indicates a passage leading from the front to the rear of the cylinder A, and communieating therewith by apertures M N, having inward Valves P and R.

S indicates the pistonrod, and T the piston, the latter being constructed of two reversely-set disks of leather or other suitable material. The piston-rod passes through'a stutling-box, U, at the rear of the cylinder A.

The operation of my invention is as follows: Upon the forward stroke of the piston air will be taken in through aperture V at the rear of the cylinder and forced out through the aper= ture F and through the nozzle B into the atomizer. Upon the return-stroke of the piston air will be taken `in at G and forced out through apertures N M through the nozzle B into the atomizer.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is

The cylinder A, having a nozzle, B, a diaphragm, D, provided with an aperture, E, and valve F, in combination with the chamber I, communicating with the cylinder by means of apertures N M, provided with suitable valves, the cylinder being provided with suitable inlet valved apertures, G and V, substantially as specified.

In testimony whereof I aix my signature, in presence of two witnesses, this 23d day ot' April, 1881.

HENRY HUMPHREVILLE. v Witnesses:

J oHN M. GRIDER, JOHN M. FEIDY. 

